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On the resistivity of the two-channel Kondo lattice and UBe13

โœ Scribed by D.L Cox

Publisher
Elsevier Science
Year
1996
Tongue
English
Weight
436 KB
Volume
223-224
Category
Article
ISSN
0921-4526

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โœฆ Synopsis

The unusually large field and pressure dependent low temperature resistivity of the heavy fermion superconductor UBel3 is interpreted as possible evidence for two-channel Kondo lattice physics. Analytic results are obtained for the resistivity of the two-channel Kondo lattice in a particular infinite dimensional limit (Lorentzian density of states). Of particular import is a residual resistivity at T = 0 due to "spin-disorder" scattering which is lifted with applied or molecular fields coupling to spin or channel indices. The analysis is tested by examining the one-channel Kondo lattice which is seen to be a soft gap insulator in qualitative accord with other theoretical results.

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โœ Kevin Ingersent; Barbara A. Jones ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 283 KB

Numerical renormalization group calculations have shown that any nonzero RKKY coupling between a pair ofspin-~ impurities destroys the zero-temperature critical point responsible for the marginal-Fermi-liquid behavior of the single-impurity, two-channel Kondo model. Here we report recent progress on